Public water system · KY0930333
ActiveOldham County Water District
At a glance
Oldham County Water District (PWSID KY0930333) is an active community water system in Oldham County, Kentucky. It reports serving 38,409 people through 9,163 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. EPA's records list 7 violations for this system; 3 are health-based, and the most recent began in September 2010.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
38,409
Service connections
9,163
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Oldham County Water District compare with other water systems in Oldham County?
By EPA's size categories, Oldham County Water District is a large system (10,001 to 100,000 people). Oldham County has 2 active public water systems, and Oldham County Water District is the largest of them by population served. Its population served is about 58% above the county average of 24,238 people per system, and accounts for 79% of the 48,476 people reported by systems filed under the county. Across Kentucky, the 437 active systems average 11,699 people each. Nationally, the average active community water system reports serving 6,703 people, so Oldham County Water District is about 5.7 times that figure.
What does “community water system” mean?
A community water system serves at least 15 connections used by year-round residents, or regularly serves at least 25 year-round residents. Homes, apartments and mobile-home parks are served by these. Kentucky has 371 active community water systems, 85% of the state's 437 active systems. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 111 Kentucky systems (25%) list groundwater as their primary source.
Who owns and regulates Oldham County Water District?
EPA lists Oldham County Water District as owned by a local government. The KY state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 2 of the 2 active systems in Oldham County (100%) are also owned by a local government.
Does Oldham County Water District have drinking water violations?
EPA's records list 7 violations for this system; 3 are health-based, and the most recent began in September 2010. The violations listed here began between August 1999 and September 2010. By type: 2 required treatment not met, 2 public notice, recordkeeping or other, 2 monitoring and reporting and 1 contaminant level above the legal limit. The contaminant or rule involved most often is Groundwater Rule (2 of them). EPA lists 7 as resolved. Resolved means at least one resolving action is on record: the system returned to compliance, the rule no longer applies, or no further action was needed.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2010-09-01 | Required treatment not metTreatment Technique (SWTR and GWR) · code 41 | Groundwater Rulecode 0700 | Yes | Resolved |
| 2010-08-01 | Required treatment not metTreatment Technique (SWTR and GWR) · code 41 | Groundwater Rulecode 0700 | Yes | Resolved |
| 2010-01-10 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2008-04-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Resolved |
| 2006-07-01 | Monitoring and reportingMonitoring, Repeat Major (TCR) · code 25 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2005-11-01 | Public notice, recordkeeping or otherConsumer Confidence Report Inadequate Reporting · code 72 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 1999-08-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
All 7 violations in EPA's records, newest first.Labels and codes come from EPA's SDWIS reference tables. A monitoring or reporting violation means a required test or report was missed or late; it does not by itself mean a contaminant was found. "Health-based" marks violations of a legal limit or required treatment.
Oldham County Water District: frequently asked questions
Who runs Oldham County Water District?
Oldham County Water District (PWSID KY0930333) is a community water system owned by a local government. It is regulated by the KY state drinking water program.
How many people does Oldham County Water District serve?
Oldham County Water District reports serving 38,409 people through 9,163 service connections in Oldham County, Kentucky.
Where does Oldham County Water District get its water?
EPA SDWIS lists this system's primary water source as groundwater. Groundwater means the system draws its water from wells or springs fed by underground aquifers.
Does Oldham County Water District have any drinking water violations?
EPA's records list 7 violations for this system; 3 are health-based, and the most recent began in September 2010. A monitoring or reporting violation means a required test or report was missed or late; it does not by itself mean a contaminant was found.
Is Oldham County Water District's water safe to drink?
AquaCensus shows EPA compliance records, not current water test results, so it cannot say whether the water is safe at a given moment. EPA's records list 7 violations for this system; 3 are health-based, and the most recent began in September 2010. For current results, consult the system's annual water quality report, EPA ECHO, or the KY state drinking water program.
Where can I find Oldham County Water District's water quality report?
As a community water system, Oldham County Water District must deliver an annual water quality report, called a Consumer Confidence Report, to its customers by July 1 each year, covering the previous calendar year. The system can provide a copy on request.
Other water systems in Oldham County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Lagrange Utilities Commission | Oldham | 10,067 | Community | Purchased groundwater |
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About this data
Source: U.S. EPA Safe Drinking Water Information System (SDWIS) and SDWA violation records, via EPA ECHO, as published October 1, 2026 — AquaCensus refreshes it quarterly. See the methodology for how records are matched, cleaned and scored.
Cite as: AquaCensus, “Oldham County Water District, PWSID KY0930333, Kentucky”, https://aquacensus.com/water-systems/kentucky/oldham-county-water-district-ky0930333 (data as of October 1, 2026).